TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Petrović, Rada
AU  - Vujančević, Jelena
AU  - Veltruska, Katerina
AU  - Matolin, Vladimir
AU  - Siketić, Zdravko
AU  - Provatas, George
AU  - Jakšić, Milko
AU  - Stan, George E.
AU  - Socol, Gabriel
AU  - Mihailescu, Ion N.
AU  - Janaćković, Đorđe
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4723
AB  - We fabricated Sn-doped TiO2 nanotubular film via annealing of anodized TiO2 nanotubes grown on F-SnO2 (FTO) glass. Annealing was carried out at 500 degrees C in ambient air. Anatase crystal structure was achieved with no change in nanotubular morphology in respect to as-anodized amorphous TiO(2 )nanotubes. The X-ray photoelectron spectroscopy analysis revealed Sn on the surface of TiO2 film, following the thermal treatment, probably caused by the diffusion from FTO glass. Depth profile examination of the film chemical composition was conducted by elastic recoil detection analysis, which showed that in addition to the diffusion of Sn from FTO, diffusion of Ti to FTO concurrently occurred. Thus, a higher concentration of Sn was found at the bottom of the tubes, while a lower concentration was present on the tubes' surface top. This explains the improved optical response revealed by a diffuse reflectance spectroscopy. The absorption enhancement demonstrated that Sn-doped TiO2 film was efficient in the degradation of methyl orange dye under visible light.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Journal of Physics and Chemistry of Solids
T1  - Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye
VL  - 147
DO  - 10.1016/j.jpcs.2020.109609
ER  - 

@article{
author = "Bjelajac, Anđelika and Petrović, Rada and Vujančević, Jelena and Veltruska, Katerina and Matolin, Vladimir and Siketić, Zdravko and Provatas, George and Jakšić, Milko and Stan, George E. and Socol, Gabriel and Mihailescu, Ion N. and Janaćković, Đorđe",
year = "2020",
abstract = "We fabricated Sn-doped TiO2 nanotubular film via annealing of anodized TiO2 nanotubes grown on F-SnO2 (FTO) glass. Annealing was carried out at 500 degrees C in ambient air. Anatase crystal structure was achieved with no change in nanotubular morphology in respect to as-anodized amorphous TiO(2 )nanotubes. The X-ray photoelectron spectroscopy analysis revealed Sn on the surface of TiO2 film, following the thermal treatment, probably caused by the diffusion from FTO glass. Depth profile examination of the film chemical composition was conducted by elastic recoil detection analysis, which showed that in addition to the diffusion of Sn from FTO, diffusion of Ti to FTO concurrently occurred. Thus, a higher concentration of Sn was found at the bottom of the tubes, while a lower concentration was present on the tubes' surface top. This explains the improved optical response revealed by a diffuse reflectance spectroscopy. The absorption enhancement demonstrated that Sn-doped TiO2 film was efficient in the degradation of methyl orange dye under visible light.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Journal of Physics and Chemistry of Solids",
title = "Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye",
volume = "147",
doi = "10.1016/j.jpcs.2020.109609"
}

Bjelajac, A., Petrović, R., Vujančević, J., Veltruska, K., Matolin, V., Siketić, Z., Provatas, G., Jakšić, M., Stan, G. E., Socol, G., Mihailescu, I. N.,& Janaćković, Đ.. (2020). Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye. in Journal of Physics and Chemistry of Solids
Pergamon-Elsevier Science Ltd, Oxford., 147.
https://doi.org/10.1016/j.jpcs.2020.109609

Bjelajac A, Petrović R, Vujančević J, Veltruska K, Matolin V, Siketić Z, Provatas G, Jakšić M, Stan GE, Socol G, Mihailescu IN, Janaćković Đ. Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye. in Journal of Physics and Chemistry of Solids. 2020;147.
doi:10.1016/j.jpcs.2020.109609 .

Bjelajac, Anđelika, Petrović, Rada, Vujančević, Jelena, Veltruska, Katerina, Matolin, Vladimir, Siketić, Zdravko, Provatas, George, Jakšić, Milko, Stan, George E., Socol, Gabriel, Mihailescu, Ion N., Janaćković, Đorđe, "Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye" in Journal of Physics and Chemistry of Solids, 147 (2020),
https://doi.org/10.1016/j.jpcs.2020.109609 . .

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Petrović, Rada
AU  - Vujančević, Jelena
AU  - Veltruska, Katerina
AU  - Matolin, Vladimir
AU  - Siketić, Zdravko
AU  - Provatas, George
AU  - Jakšić, Milko
AU  - Stan, George E.
AU  - Socol, Gabriel
AU  - Mihailescu, Ion N.
AU  - Janaćković, Đorđe
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4396
AB  - We fabricated Sn-doped TiO2 nanotubular film via annealing of anodized TiO2 nanotubes grown on F-SnO2 (FTO) glass. Annealing was carried out at 500 degrees C in ambient air. Anatase crystal structure was achieved with no change in nanotubular morphology in respect to as-anodized amorphous TiO(2 )nanotubes. The X-ray photoelectron spectroscopy analysis revealed Sn on the surface of TiO2 film, following the thermal treatment, probably caused by the diffusion from FTO glass. Depth profile examination of the film chemical composition was conducted by elastic recoil detection analysis, which showed that in addition to the diffusion of Sn from FTO, diffusion of Ti to FTO concurrently occurred. Thus, a higher concentration of Sn was found at the bottom of the tubes, while a lower concentration was present on the tubes' surface top. This explains the improved optical response revealed by a diffuse reflectance spectroscopy. The absorption enhancement demonstrated that Sn-doped TiO2 film was efficient in the degradation of methyl orange dye under visible light.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Journal of Physics and Chemistry of Solids
T1  - Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye
SP  - 109609
VL  - 147
DO  - 10.1016/j.jpcs.2020.109609
ER  - 

@article{
author = "Bjelajac, Anđelika and Petrović, Rada and Vujančević, Jelena and Veltruska, Katerina and Matolin, Vladimir and Siketić, Zdravko and Provatas, George and Jakšić, Milko and Stan, George E. and Socol, Gabriel and Mihailescu, Ion N. and Janaćković, Đorđe",
year = "2020",
abstract = "We fabricated Sn-doped TiO2 nanotubular film via annealing of anodized TiO2 nanotubes grown on F-SnO2 (FTO) glass. Annealing was carried out at 500 degrees C in ambient air. Anatase crystal structure was achieved with no change in nanotubular morphology in respect to as-anodized amorphous TiO(2 )nanotubes. The X-ray photoelectron spectroscopy analysis revealed Sn on the surface of TiO2 film, following the thermal treatment, probably caused by the diffusion from FTO glass. Depth profile examination of the film chemical composition was conducted by elastic recoil detection analysis, which showed that in addition to the diffusion of Sn from FTO, diffusion of Ti to FTO concurrently occurred. Thus, a higher concentration of Sn was found at the bottom of the tubes, while a lower concentration was present on the tubes' surface top. This explains the improved optical response revealed by a diffuse reflectance spectroscopy. The absorption enhancement demonstrated that Sn-doped TiO2 film was efficient in the degradation of methyl orange dye under visible light.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Journal of Physics and Chemistry of Solids",
title = "Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye",
pages = "109609",
volume = "147",
doi = "10.1016/j.jpcs.2020.109609"
}

Bjelajac, A., Petrović, R., Vujančević, J., Veltruska, K., Matolin, V., Siketić, Z., Provatas, G., Jakšić, M., Stan, G. E., Socol, G., Mihailescu, I. N.,& Janaćković, Đ.. (2020). Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye. in Journal of Physics and Chemistry of Solids
Pergamon-Elsevier Science Ltd, Oxford., 147, 109609.
https://doi.org/10.1016/j.jpcs.2020.109609

Bjelajac A, Petrović R, Vujančević J, Veltruska K, Matolin V, Siketić Z, Provatas G, Jakšić M, Stan GE, Socol G, Mihailescu IN, Janaćković Đ. Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye. in Journal of Physics and Chemistry of Solids. 2020;147:109609.
doi:10.1016/j.jpcs.2020.109609 .

Bjelajac, Anđelika, Petrović, Rada, Vujančević, Jelena, Veltruska, Katerina, Matolin, Vladimir, Siketić, Zdravko, Provatas, George, Jakšić, Milko, Stan, George E., Socol, Gabriel, Mihailescu, Ion N., Janaćković, Đorđe, "Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye" in Journal of Physics and Chemistry of Solids, 147 (2020):109609,
https://doi.org/10.1016/j.jpcs.2020.109609 . .

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Petrović, Rada
AU  - Popović, Maja
AU  - Rakočević, Zlatko Lj.
AU  - Socol, Gabriel
AU  - Mihailescu, Ion N.
AU  - Janaćković, Đorđe
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4092
AB  - The similar to 60 nm wide and similar to 2 mu m long TiO2 nanotubes were obtained by anodization of Ti films sputtered on F-doped tin oxide glass. For N-doping the samples were annealed in ammonia atmosphere. The effect of pre- and post-annealing in air on the nature and amount of incorporated N was studied by X-ray photoelectron spectroscopy. By measuring the absorption spectra of the obtained samples and interpreting the corresponding Tauc plots it was shown that the sample annealed just in ammonia showed the highest visible light absorption even after sputtering cleaning and a decrease of N amount from 3.8% to 1%. Pre and/or post annealing in air led to smaller amount of incorporated N, that caused less pronounced absorption enhancement and smaller band gap narrowing compared to the sample annealed only in ammonia. By fitting of N 1 s line, the contribution that was assigned to substitutional N was detected only in the samples that did not sustained post-annealing. The study showed that post-annealing in air might lead to partial conversion of N atoms in TiO2 to oxidized nitrogen species that are easily removed with sputtering. It is also possible that substitutional nitrogen was suppressed by oxygen from air to move to interstitial site. Weakly bonded NOx surface species, which are cleaned away by sputtering, can be removed by post-annealing in air. Those surface species could act as sensitizers and when their amounts are reduced, the core absorption properties, as a result of interstitial incorporation of N in TiO2 structure, were revealed. Much lower visible light sensitization was achieved in the case of pre-annealed sample in comparison to sample without pre-annealing, regardless the same quantity and type of incorporated nitrogen.
PB  - Elsevier Science Sa, Lausanne
T2  - Thin Solid Films
T1  - Doping of TiO2 nanotubes with nitrogen by annealing in ammonia for visible light activation: Influence of pre- and post-annealing in air
SP  - 137598
VL  - 692
DO  - 10.1016/j.tsf.2019.137598
ER  - 

@article{
author = "Bjelajac, Anđelika and Petrović, Rada and Popović, Maja and Rakočević, Zlatko Lj. and Socol, Gabriel and Mihailescu, Ion N. and Janaćković, Đorđe",
year = "2019",
abstract = "The similar to 60 nm wide and similar to 2 mu m long TiO2 nanotubes were obtained by anodization of Ti films sputtered on F-doped tin oxide glass. For N-doping the samples were annealed in ammonia atmosphere. The effect of pre- and post-annealing in air on the nature and amount of incorporated N was studied by X-ray photoelectron spectroscopy. By measuring the absorption spectra of the obtained samples and interpreting the corresponding Tauc plots it was shown that the sample annealed just in ammonia showed the highest visible light absorption even after sputtering cleaning and a decrease of N amount from 3.8% to 1%. Pre and/or post annealing in air led to smaller amount of incorporated N, that caused less pronounced absorption enhancement and smaller band gap narrowing compared to the sample annealed only in ammonia. By fitting of N 1 s line, the contribution that was assigned to substitutional N was detected only in the samples that did not sustained post-annealing. The study showed that post-annealing in air might lead to partial conversion of N atoms in TiO2 to oxidized nitrogen species that are easily removed with sputtering. It is also possible that substitutional nitrogen was suppressed by oxygen from air to move to interstitial site. Weakly bonded NOx surface species, which are cleaned away by sputtering, can be removed by post-annealing in air. Those surface species could act as sensitizers and when their amounts are reduced, the core absorption properties, as a result of interstitial incorporation of N in TiO2 structure, were revealed. Much lower visible light sensitization was achieved in the case of pre-annealed sample in comparison to sample without pre-annealing, regardless the same quantity and type of incorporated nitrogen.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Thin Solid Films",
title = "Doping of TiO2 nanotubes with nitrogen by annealing in ammonia for visible light activation: Influence of pre- and post-annealing in air",
pages = "137598",
volume = "692",
doi = "10.1016/j.tsf.2019.137598"
}

Bjelajac, A., Petrović, R., Popović, M., Rakočević, Z. Lj., Socol, G., Mihailescu, I. N.,& Janaćković, Đ.. (2019). Doping of TiO2 nanotubes with nitrogen by annealing in ammonia for visible light activation: Influence of pre- and post-annealing in air. in Thin Solid Films
Elsevier Science Sa, Lausanne., 692, 137598.
https://doi.org/10.1016/j.tsf.2019.137598

Bjelajac A, Petrović R, Popović M, Rakočević ZL, Socol G, Mihailescu IN, Janaćković Đ. Doping of TiO2 nanotubes with nitrogen by annealing in ammonia for visible light activation: Influence of pre- and post-annealing in air. in Thin Solid Films. 2019;692:137598.
doi:10.1016/j.tsf.2019.137598 .

Bjelajac, Anđelika, Petrović, Rada, Popović, Maja, Rakočević, Zlatko Lj., Socol, Gabriel, Mihailescu, Ion N., Janaćković, Đorđe, "Doping of TiO2 nanotubes with nitrogen by annealing in ammonia for visible light activation: Influence of pre- and post-annealing in air" in Thin Solid Films, 692 (2019):137598,
https://doi.org/10.1016/j.tsf.2019.137598 . .

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko
AU  - Petrović, Rada
AU  - Bundaleski, Nenad
AU  - Socol, Gabriel
AU  - Mihailescu, Ion N.
AU  - Rakočević, Zlatko Lj.
AU  - Janaćković, Đorđe
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3631
AB  - A process of obtaining N-doped TiO2 nanotubes sensitized by CdS nanoparticles is presented, including detailed characterizations performed along the synthesis. Transparent TiO2 films consisting of nanotubes, 2.5 mu m long and of similar to 60 nm inner diameter, were obtained after anodization of a titanium film deposited onto FTO glass substrate. N-doping was achieved by annealing of TiO2 film in ammonia. X-ray Photoelectron Spectroscopy measurements showed that nitrogen was substitutionally incorporated in the TiO2 matrix, with the N:Ti concentration ratio of 1:100. The doping changed the optical properties of the material in such a way that the absorption edge was shifted from 380 nm to 507 nm, as observed from diffuse reflectance spectra. The influence of the microwave (MW) irradiation on the synthesized CdS quantum dots and their optical properties was investigated. It was shown that the diameter of CdS nanoparticles was increased due to releasing of S-2-ions from dimethyl sulfoxide (DMSO) as a consequence of the MW treatment. The (N)TiO2 films were then used as substrates for matrix assisted pulsed laser deposition of the CdS quantum dots with DMSO as a matrix. The laser parameters for the deposition were optimized in order to preserve the nanotubular structure open, the latter being an important feature of this type of photoanode. The structure obtained under optimized conditions has an additional absorption edge shift, reaching 603 nm.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots
EP  - 15046
IS  - 17
SP  - 15040
VL  - 43
DO  - 10.1016/j.ceramint.2017.08.029
ER  - 

@article{
author = "Bjelajac, Anđelika and Đokić, Veljko and Petrović, Rada and Bundaleski, Nenad and Socol, Gabriel and Mihailescu, Ion N. and Rakočević, Zlatko Lj. and Janaćković, Đorđe",
year = "2017",
abstract = "A process of obtaining N-doped TiO2 nanotubes sensitized by CdS nanoparticles is presented, including detailed characterizations performed along the synthesis. Transparent TiO2 films consisting of nanotubes, 2.5 mu m long and of similar to 60 nm inner diameter, were obtained after anodization of a titanium film deposited onto FTO glass substrate. N-doping was achieved by annealing of TiO2 film in ammonia. X-ray Photoelectron Spectroscopy measurements showed that nitrogen was substitutionally incorporated in the TiO2 matrix, with the N:Ti concentration ratio of 1:100. The doping changed the optical properties of the material in such a way that the absorption edge was shifted from 380 nm to 507 nm, as observed from diffuse reflectance spectra. The influence of the microwave (MW) irradiation on the synthesized CdS quantum dots and their optical properties was investigated. It was shown that the diameter of CdS nanoparticles was increased due to releasing of S-2-ions from dimethyl sulfoxide (DMSO) as a consequence of the MW treatment. The (N)TiO2 films were then used as substrates for matrix assisted pulsed laser deposition of the CdS quantum dots with DMSO as a matrix. The laser parameters for the deposition were optimized in order to preserve the nanotubular structure open, the latter being an important feature of this type of photoanode. The structure obtained under optimized conditions has an additional absorption edge shift, reaching 603 nm.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots",
pages = "15046-15040",
number = "17",
volume = "43",
doi = "10.1016/j.ceramint.2017.08.029"
}

Bjelajac, A., Đokić, V., Petrović, R., Bundaleski, N., Socol, G., Mihailescu, I. N., Rakočević, Z. Lj.,& Janaćković, Đ.. (2017). Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots. in Ceramics International
Elsevier Sci Ltd, Oxford., 43(17), 15040-15046.
https://doi.org/10.1016/j.ceramint.2017.08.029

Bjelajac A, Đokić V, Petrović R, Bundaleski N, Socol G, Mihailescu IN, Rakočević ZL, Janaćković Đ. Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots. in Ceramics International. 2017;43(17):15040-15046.
doi:10.1016/j.ceramint.2017.08.029 .

Bjelajac, Anđelika, Đokić, Veljko, Petrović, Rada, Bundaleski, Nenad, Socol, Gabriel, Mihailescu, Ion N., Rakočević, Zlatko Lj., Janaćković, Đorđe, "Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots" in Ceramics International, 43, no. 17 (2017):15040-15046,
https://doi.org/10.1016/j.ceramint.2017.08.029 . .

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Petrović, Rada
AU  - Socol, Gabriel
AU  - Mihailescu, Ion N.
AU  - Enculescu, Monica
AU  - Grurriezescu, Valentina
AU  - Pavlović, Vladimir
AU  - Janaćković, Đorđe
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3430
AB  - Within this study a matrix assisted pulsed laser evaporation technique was employed for deposition of CdS quantum dots onto TiO2 nanotubes. The number of laser pulses and laser fluence were varied to control the amount of CdS deposit. TiO2 nanotubes were obtained via anodization technique of sputtered Ti film on FTO glass. For CdS synthesis, dimethyl sulfoxide (DMSO) was used as a matrix of the target which absorbs radiation of KrF* laser (lambda=248 nm), then evaporates enabling the deposition of CdS quantum dots dispersed into DMSO. This study showed that the size of the CdS nanoparticles synthetized in DMSO can be controlled with microwave treatment that causes the release of S2- ions from DMSO for creation of CdS nuclei and/or their further growth. The optimization of CdS synthesis is achieved by varying the duration of the microwave treatment and the microwave power. The obtained TiO2 photo anodes with different amounts of CdS were assembled with PbS cathodes and the polysulfide electrolyte was injected between. The influence of amount of CdS deposit and the microwave treatment of CdS on photovoltaic performance of the fabricated solar cells were analyzed under AM1.5. The results showed that microwave treatment produced a Cd(S)-DMSO complex onto CdS nanoparticles which led to a higher current density of the solar cells obtained using microwave treated CdS target. Also, the increase of CdS content by increasing the number of laser pulses provided the enhance of I-V characteristics of the solar cells.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - CdS quantum dots sensitized TiO2 nanotubes by matrix assisted pulsed laser evaporation method
EP  - 9017
IS  - 7
SP  - 9011
VL  - 42
DO  - 10.1016/j.ceramint.2016.02.159
ER  - 

@article{
author = "Bjelajac, Anđelika and Petrović, Rada and Socol, Gabriel and Mihailescu, Ion N. and Enculescu, Monica and Grurriezescu, Valentina and Pavlović, Vladimir and Janaćković, Đorđe",
year = "2016",
abstract = "Within this study a matrix assisted pulsed laser evaporation technique was employed for deposition of CdS quantum dots onto TiO2 nanotubes. The number of laser pulses and laser fluence were varied to control the amount of CdS deposit. TiO2 nanotubes were obtained via anodization technique of sputtered Ti film on FTO glass. For CdS synthesis, dimethyl sulfoxide (DMSO) was used as a matrix of the target which absorbs radiation of KrF* laser (lambda=248 nm), then evaporates enabling the deposition of CdS quantum dots dispersed into DMSO. This study showed that the size of the CdS nanoparticles synthetized in DMSO can be controlled with microwave treatment that causes the release of S2- ions from DMSO for creation of CdS nuclei and/or their further growth. The optimization of CdS synthesis is achieved by varying the duration of the microwave treatment and the microwave power. The obtained TiO2 photo anodes with different amounts of CdS were assembled with PbS cathodes and the polysulfide electrolyte was injected between. The influence of amount of CdS deposit and the microwave treatment of CdS on photovoltaic performance of the fabricated solar cells were analyzed under AM1.5. The results showed that microwave treatment produced a Cd(S)-DMSO complex onto CdS nanoparticles which led to a higher current density of the solar cells obtained using microwave treated CdS target. Also, the increase of CdS content by increasing the number of laser pulses provided the enhance of I-V characteristics of the solar cells.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "CdS quantum dots sensitized TiO2 nanotubes by matrix assisted pulsed laser evaporation method",
pages = "9017-9011",
number = "7",
volume = "42",
doi = "10.1016/j.ceramint.2016.02.159"
}

Bjelajac, A., Petrović, R., Socol, G., Mihailescu, I. N., Enculescu, M., Grurriezescu, V., Pavlović, V.,& Janaćković, Đ.. (2016). CdS quantum dots sensitized TiO2 nanotubes by matrix assisted pulsed laser evaporation method. in Ceramics International
Elsevier Sci Ltd, Oxford., 42(7), 9011-9017.
https://doi.org/10.1016/j.ceramint.2016.02.159

Bjelajac A, Petrović R, Socol G, Mihailescu IN, Enculescu M, Grurriezescu V, Pavlović V, Janaćković Đ. CdS quantum dots sensitized TiO2 nanotubes by matrix assisted pulsed laser evaporation method. in Ceramics International. 2016;42(7):9011-9017.
doi:10.1016/j.ceramint.2016.02.159 .

Bjelajac, Anđelika, Petrović, Rada, Socol, Gabriel, Mihailescu, Ion N., Enculescu, Monica, Grurriezescu, Valentina, Pavlović, Vladimir, Janaćković, Đorđe, "CdS quantum dots sensitized TiO2 nanotubes by matrix assisted pulsed laser evaporation method" in Ceramics International, 42, no. 7 (2016):9011-9017,
https://doi.org/10.1016/j.ceramint.2016.02.159 . .

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko
AU  - Petrović, Rada
AU  - Stan, George E.
AU  - Socol, Gabriel
AU  - Popescu-Pelin, G.
AU  - Mihailescu, Ion N.
AU  - Janaćković, Đorđe
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3086
AB  - Titanium films sputtered on FTO glass were used for obtaining highly oriented titania nanotubes via anodization technique. Then, pulsed laser deposition of CdS was carried out for sensitizing of similar to 60 nm wide titania nanotubes by applying 50, 100, 150 or 200 subsequent laser pulses. Scanning electron microscopy was used to indicate which samples had the open nanotubular structure of titania preserved after the deposition of CdS. Energy dispersive spectroscopy showed that a higher number of applied laser pulses results in the increase of Cd and S quantity within samples. Pulsed laser deposition technique was also employed for the fabrication of PbS counter electrode. I-V characteristics of the photovoltaic cells consisting the obtained electrodes were measured and compared under one-sun illumination. The photovoltaic cell with photoanode sensitized with CdS by applying 150 laser pulses showed the highest current density and voltage among the investigated cell.
PB  - Inst Materials Physics, Bucharest
T2  - Digest Journal of Nanomaterials and Biostructures
T1  - Pulsed laser deposition method for fabrication of cds/tio2 and pbs photoelectrodes for solar energy application
EP  - 1418
IS  - 4
SP  - 1411
VL  - 10
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3086
ER  - 

@article{
author = "Bjelajac, Anđelika and Đokić, Veljko and Petrović, Rada and Stan, George E. and Socol, Gabriel and Popescu-Pelin, G. and Mihailescu, Ion N. and Janaćković, Đorđe",
year = "2015",
abstract = "Titanium films sputtered on FTO glass were used for obtaining highly oriented titania nanotubes via anodization technique. Then, pulsed laser deposition of CdS was carried out for sensitizing of similar to 60 nm wide titania nanotubes by applying 50, 100, 150 or 200 subsequent laser pulses. Scanning electron microscopy was used to indicate which samples had the open nanotubular structure of titania preserved after the deposition of CdS. Energy dispersive spectroscopy showed that a higher number of applied laser pulses results in the increase of Cd and S quantity within samples. Pulsed laser deposition technique was also employed for the fabrication of PbS counter electrode. I-V characteristics of the photovoltaic cells consisting the obtained electrodes were measured and compared under one-sun illumination. The photovoltaic cell with photoanode sensitized with CdS by applying 150 laser pulses showed the highest current density and voltage among the investigated cell.",
publisher = "Inst Materials Physics, Bucharest",
journal = "Digest Journal of Nanomaterials and Biostructures",
title = "Pulsed laser deposition method for fabrication of cds/tio2 and pbs photoelectrodes for solar energy application",
pages = "1418-1411",
number = "4",
volume = "10",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3086"
}

Bjelajac, A., Đokić, V., Petrović, R., Stan, G. E., Socol, G., Popescu-Pelin, G., Mihailescu, I. N.,& Janaćković, Đ.. (2015). Pulsed laser deposition method for fabrication of cds/tio2 and pbs photoelectrodes for solar energy application. in Digest Journal of Nanomaterials and Biostructures
Inst Materials Physics, Bucharest., 10(4), 1411-1418.
https://hdl.handle.net/21.15107/rcub_technorep_3086

Bjelajac A, Đokić V, Petrović R, Stan GE, Socol G, Popescu-Pelin G, Mihailescu IN, Janaćković Đ. Pulsed laser deposition method for fabrication of cds/tio2 and pbs photoelectrodes for solar energy application. in Digest Journal of Nanomaterials and Biostructures. 2015;10(4):1411-1418.
https://hdl.handle.net/21.15107/rcub_technorep_3086 .

Bjelajac, Anđelika, Đokić, Veljko, Petrović, Rada, Stan, George E., Socol, Gabriel, Popescu-Pelin, G., Mihailescu, Ion N., Janaćković, Đorđe, "Pulsed laser deposition method for fabrication of cds/tio2 and pbs photoelectrodes for solar energy application" in Digest Journal of Nanomaterials and Biostructures, 10, no. 4 (2015):1411-1418,
https://hdl.handle.net/21.15107/rcub_technorep_3086 .

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko
AU  - Petrović, Rada
AU  - Socol, Gabriel
AU  - Mihailescu, Ion N.
AU  - Florea, Ileana
AU  - Ersen, Ovidiu
AU  - Janaćković, Đorđe
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2831
AB  - Titanium dioxide (TiO2) nanotubes arrays, obtained by anodization technique and annealing, were decorated with CdS using pulsed laser deposition method. Their structural, morphological and chemical characterization was carried out by electron microscopy in scanning (SEM) and transmission (TEM) modes, combined with energy dispersive spectroscopy (EDS) and electron energy loss spectroscopy (EELS). It was demonstrated that the quantity of deposited CdS can be controlled by varying the number of laser pulses. The chemical mapping of the elements of interest was performed using the energy filtered mode of the electron microscope. The results showed that pulse laser deposition is an adequate technique for deposition of CdS inside and between 100 nm wide TiO2 nanotubes. The diffuse reflectance spectroscopy investigation of selected samples proved that the absorption edge of the prepared CdS/TiO2 nanocomposites is significantly extended to the visible range. The corresponding band gaps were determinated from the Tauc plot of transformed Kubelka-Munk function. The band gap reduction of TiO2 nanotubes by pulsed laser deposition of CdS was put in evidence.
PB  - Elsevier Science Bv, Amsterdam
T2  - Applied Surface Science
T1  - Visible light-harvesting of TiO2 nanotubes array by pulsed laser deposited CdS
EP  - 230
SP  - 225
VL  - 309
DO  - 10.1016/j.apsusc.2014.05.015
ER  - 

@article{
author = "Bjelajac, Anđelika and Đokić, Veljko and Petrović, Rada and Socol, Gabriel and Mihailescu, Ion N. and Florea, Ileana and Ersen, Ovidiu and Janaćković, Đorđe",
year = "2014",
abstract = "Titanium dioxide (TiO2) nanotubes arrays, obtained by anodization technique and annealing, were decorated with CdS using pulsed laser deposition method. Their structural, morphological and chemical characterization was carried out by electron microscopy in scanning (SEM) and transmission (TEM) modes, combined with energy dispersive spectroscopy (EDS) and electron energy loss spectroscopy (EELS). It was demonstrated that the quantity of deposited CdS can be controlled by varying the number of laser pulses. The chemical mapping of the elements of interest was performed using the energy filtered mode of the electron microscope. The results showed that pulse laser deposition is an adequate technique for deposition of CdS inside and between 100 nm wide TiO2 nanotubes. The diffuse reflectance spectroscopy investigation of selected samples proved that the absorption edge of the prepared CdS/TiO2 nanocomposites is significantly extended to the visible range. The corresponding band gaps were determinated from the Tauc plot of transformed Kubelka-Munk function. The band gap reduction of TiO2 nanotubes by pulsed laser deposition of CdS was put in evidence.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Applied Surface Science",
title = "Visible light-harvesting of TiO2 nanotubes array by pulsed laser deposited CdS",
pages = "230-225",
volume = "309",
doi = "10.1016/j.apsusc.2014.05.015"
}

Bjelajac, A., Đokić, V., Petrović, R., Socol, G., Mihailescu, I. N., Florea, I., Ersen, O.,& Janaćković, Đ.. (2014). Visible light-harvesting of TiO2 nanotubes array by pulsed laser deposited CdS. in Applied Surface Science
Elsevier Science Bv, Amsterdam., 309, 225-230.
https://doi.org/10.1016/j.apsusc.2014.05.015

Bjelajac A, Đokić V, Petrović R, Socol G, Mihailescu IN, Florea I, Ersen O, Janaćković Đ. Visible light-harvesting of TiO2 nanotubes array by pulsed laser deposited CdS. in Applied Surface Science. 2014;309:225-230.
doi:10.1016/j.apsusc.2014.05.015 .

Bjelajac, Anđelika, Đokić, Veljko, Petrović, Rada, Socol, Gabriel, Mihailescu, Ion N., Florea, Ileana, Ersen, Ovidiu, Janaćković, Đorđe, "Visible light-harvesting of TiO2 nanotubes array by pulsed laser deposited CdS" in Applied Surface Science, 309 (2014):225-230,
https://doi.org/10.1016/j.apsusc.2014.05.015 . .

TY  - JOUR
AU  - Linnik, Oksana
AU  - Petrik, Irina
AU  - Smirnova, Natalia
AU  - Kandyba, Viktor
AU  - Korduban, Oleksandr
AU  - Eremenko, Anna
AU  - Socol, Gabriel
AU  - Stefan, Nicolaie
AU  - Ristoscu, Carmen
AU  - Mihailescu, Ion N.
AU  - Sutan, Claudiu
AU  - Malinovschi, Viorel
AU  - Đokić, Veljko
AU  - Janaković, Đordje
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2007
AB  - Doped TiO2/ZrO2 films were obtained by Pulsed Laser Deposition method under different synthesis conditions. The onset of absorption spectra was red shifted for the films obtained in N-2 containing gas mixtures, while a broad absorption in visible was observed in the case of films deposited in CH4 atmosphere. The presence of O-Ti-N bonds revealed by XPS corresponded to the highest photocatalytic performance. XPS spectra of the samples obtained in N-2/CH4 gas mixtures evidenced a more effective incorporation of nitrogen in the structure due to oxygen deficiency. Nevertheless, no atomic carbon presence in the TiO2/ZrO2 structures has been detected.
PB  - Inst Materials Physics, Bucharest
T2  - Digest Journal of Nanomaterials and Biostructures
T1  - Tio2/zro2 thin films synthesized by pld in low pressure n-, c- and/or o-containing gases: structural, optical and photocatalytic properties
EP  - 1352
IS  - 3
SP  - 1343
VL  - 7
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2007
ER  - 

@article{
author = "Linnik, Oksana and Petrik, Irina and Smirnova, Natalia and Kandyba, Viktor and Korduban, Oleksandr and Eremenko, Anna and Socol, Gabriel and Stefan, Nicolaie and Ristoscu, Carmen and Mihailescu, Ion N. and Sutan, Claudiu and Malinovschi, Viorel and Đokić, Veljko and Janaković, Đordje",
year = "2012",
abstract = "Doped TiO2/ZrO2 films were obtained by Pulsed Laser Deposition method under different synthesis conditions. The onset of absorption spectra was red shifted for the films obtained in N-2 containing gas mixtures, while a broad absorption in visible was observed in the case of films deposited in CH4 atmosphere. The presence of O-Ti-N bonds revealed by XPS corresponded to the highest photocatalytic performance. XPS spectra of the samples obtained in N-2/CH4 gas mixtures evidenced a more effective incorporation of nitrogen in the structure due to oxygen deficiency. Nevertheless, no atomic carbon presence in the TiO2/ZrO2 structures has been detected.",
publisher = "Inst Materials Physics, Bucharest",
journal = "Digest Journal of Nanomaterials and Biostructures",
title = "Tio2/zro2 thin films synthesized by pld in low pressure n-, c- and/or o-containing gases: structural, optical and photocatalytic properties",
pages = "1352-1343",
number = "3",
volume = "7",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2007"
}

Linnik, O., Petrik, I., Smirnova, N., Kandyba, V., Korduban, O., Eremenko, A., Socol, G., Stefan, N., Ristoscu, C., Mihailescu, I. N., Sutan, C., Malinovschi, V., Đokić, V.,& Janaković, Đ.. (2012). Tio2/zro2 thin films synthesized by pld in low pressure n-, c- and/or o-containing gases: structural, optical and photocatalytic properties. in Digest Journal of Nanomaterials and Biostructures
Inst Materials Physics, Bucharest., 7(3), 1343-1352.
https://hdl.handle.net/21.15107/rcub_technorep_2007

Linnik O, Petrik I, Smirnova N, Kandyba V, Korduban O, Eremenko A, Socol G, Stefan N, Ristoscu C, Mihailescu IN, Sutan C, Malinovschi V, Đokić V, Janaković Đ. Tio2/zro2 thin films synthesized by pld in low pressure n-, c- and/or o-containing gases: structural, optical and photocatalytic properties. in Digest Journal of Nanomaterials and Biostructures. 2012;7(3):1343-1352.
https://hdl.handle.net/21.15107/rcub_technorep_2007 .

Linnik, Oksana, Petrik, Irina, Smirnova, Natalia, Kandyba, Viktor, Korduban, Oleksandr, Eremenko, Anna, Socol, Gabriel, Stefan, Nicolaie, Ristoscu, Carmen, Mihailescu, Ion N., Sutan, Claudiu, Malinovschi, Viorel, Đokić, Veljko, Janaković, Đordje, "Tio2/zro2 thin films synthesized by pld in low pressure n-, c- and/or o-containing gases: structural, optical and photocatalytic properties" in Digest Journal of Nanomaterials and Biostructures, 7, no. 3 (2012):1343-1352,
https://hdl.handle.net/21.15107/rcub_technorep_2007 .